Joshua Norton, Street Fighter?
In early 1850, Joshua Norton was brought before San Francisco Alcalde John W. Geary on charge of assault — and was found guilty and fined.
That’s how a “Pioneer” eyewitness remembered it in 1887, in the pages of The Overland Monthly.
Corroborating — preferably contemporaneous — evidence would be needed in order to give this story full credence. But, IF the story is true, it could be seen as providing an early anchor and baseline for later documented reports that Emperor Norton could be prone to having a short fuse, if he felt he was being disrespected.